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Study on Weeds Abundance on Rice Fields in Mycorrhizal Inoculation and Different Planting Methods Charisnalia Listyowati; Didik Indradewa; Siti Nurul Rofiqo Irwan
Caraka Tani: Journal of Sustainable Agriculture Vol 37, No 2 (2022): October
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/carakatani.v37i2.53131

The increasing demand for rice and the increasing population growth rate require sustainable rice production. Direct seeding of rice (DSR) combined with the use of arbuscular mycorrhizal fungi (AMF) is needed to achieve sustainable food production. This study aims to determine the effect of the planting method and mycorrhizal inoculation on the diversity, composition and dominance of weeds in a rice field for the sustainability of agricultural production. The research used a split-plot design with three replications. The main plot was the planting method consisting of on row, drum seeder and transplanting, while the subplot was mycorrhizal inoculation divided into with mycorrhizal inoculation and without mycorrhizal inoculation. The observed variables were light penetration, weeds population, weeds composition, weeds biomass, summed dominance ratio and community coefficient. The results showed that there were 34 kinds of weeds consisting of 13 families and the dominant weed was annual weeds, most of which were broadleaf weeds. The dominant weed was Alternanthera sessilis (L.) R. Br. ex DC. (sessile joyweed). The planting methods affected the weed population in 24 days after sowing (DAS) and the composition of broadleaf weeds in 24 DAS but did not affect weed biomass. The AMF inoculation did not affect weed population, composition, or biomass. It is necessary to find mycorrhizal species that can affect weed growth.

The effect of corncob biochar application and dose reduction of N, P, K fertilizer on growth and yield of soybean (Glycine max L.) in regosol soil, Bantul, Yogyakarta Risda Yunita Nurjanah; Didik Indradewa; Siti Nurul Rofiqo Irwan
Jurnal Ilmu Pertanian Vol 7, No 3 (2022): December
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.72231

During the period of growth and development, soybeans need loose soil that is rich in organic matter. Biochar is a soil amendment with high porosity and large surface area, resulting in nutrients and water to be well absorbed and retained. Intensive agricultural cultivation requires a supply of nutrients by the application of inorganic fertilizers such as N, P, and K. Organic matter needs to be applied to maintain soil fertility and balancing the dose of inorganic fertilizers. The study aimed to determine the effect of corncob biochar application and the dose reduction of N, P, K fertilizer on the growth and yield of soybean. The research was conducted from November 2020 to March 2021, located at Tridharma Farm, Yogyakarta. Randomized complete block design was used with the application of 10 t/ha of biochar and without biochar as the first factor. The second factor was the use of N, P, K fertilizers in 100%, 75%, 50%, and 0% of recommended doses. The application of biochar 10 t/ha on soybeans was able to increase physiological components which include stomatal opening, stomatal density, and N, P, K uptake; growth components which include root length density, root area density, leaf area, leaf area index, net assimilation rate, crop growth rate, plant dry weight, harvest index, and yield components which include number of nodes and pods per plant, 100 seed weight, grain weight per plant and grain yield. Dose reduction of fertilizers did not lead to decreasing the physiological activity, growth, and yield of soybeans.

The effect of corncob biochar application and dose reduction of N, P, K fertilizer on growth and yield of soybean (Glycine max L.) in regosol soil, Bantul, Yogyakarta Risda Yunita Nurjanah; Didik Indradewa; Siti Nurul Rofiqo Irwan
Jurnal Ilmu Pertanian Vol 7, No 3 (2022): December (In Press)
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.72231

During the period of growth and development, soybeans need loose soil that is rich in organic matter. Biochar is a soil amendment with high porosity and large surface area, resulting in nutrients and water to be well absorbed and retained. Intensive agricultural cultivation requires a supply of nutrients by the application of inorganic fertilizers such as N, P, and K. Organic matter needs to be applied to maintain soil fertility and balancing the dose of inorganic fertilizers. The study aimed to determine the effect of corncob biochar application and the dose reduction of N, P, K fertilizer on the growth and yield of soybean. The research was conducted from November 2020 to March 2021, located at Tridharma Farm, Yogyakarta. Randomized complete block design was used with the application of 10 t/ha of biochar and without biochar as the first factor. The second factor was the use of N, P, K fertilizers in 100%, 75%, 50%, and 0% of recommended doses. The application of biochar 10 t/ha on soybeans was able to increase physiological components which include stomatal opening, stomatal density, and N, P, K uptake; growth components which include root length density, root area density, leaf area, leaf area index, net assimilation rate, crop growth rate, plant dry weight, harvest index, and yield components which include number of nodes and pods per plant, 100 seed weight, grain weight per plant and grain yield. Dose reduction of fertilizers did not lead to decreasing the physiological activity, growth, and yield of soybeans.

Pekarangan Pinggir Kota untuk Menyangga Ekosistem Perkotaan: Pemanfaatan dan Keanekaragaman Tanaman Siti Nurul Rofiqo Irwan; Valentina Dwi Suci Handayani; Haviah Havidhotul Ilmiah
Jurnal Ilmu Pertanian Indonesia Vol. 28 No. 2 (2023): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18343/jipi.28.2.244

Home garden “pekarangan” plays an important role in conserving plant diversity in urban and suburban area. The suburban area including of pekarangan is a buffer area to preserve the quality of the urban environment. This study aimed to determine the utilization and plant diversity in suburban pekarangan of Yogyakarta. This research was carried out in Maguwoharjo using a survey method for 105 samples of home garden. Data were collected by observation using purposive sampling based on size of yard area. The results showed that the utilization of pekarangan in Maguwoharjo was dominated by ornamental plants, consist of sri rejeki (Aglaonema sp., Araceae), orchids (Dendrobium, Orchidaceae) and frangipani trees (Plumeria sp., Apocynaceae). Other functions of home garden were fruit plant and ground cover/grass. There was found 90 species of plants from 49 families, 27 species of trees, 60 species of shrubs, and three species of ground cover. The Shannon Wienner plant diversity index (H') was above 3 indicating the high category and the Evenness species evenness index (E) was close to 1 indicating a stable ecosystem condition. The H’ and E index based on size of yard area showed 3.74 and 0.88 (very small, <20 m2), 3.90 and 0,.89 (small, 20–50 m2), 3.44 and 0.88 (medium, 50–100 m2), 3.52 and 0.93 (big, 100–200 m2), 3.06 and 0.94 (very big, >200 m2). The results showed that suburban home garden “pekarangan” can support quality of urban ecosystem and its preservation. Keywords: evenness index, Maguwoharjo Sleman, shannon wienner index, suburban pekarangan, Yogyakarta

Studi Kenyamanan untuk Aktivitas di Lanskap Hutan Kota UGM Studi Kasus: Klaster Agro UGM Siti Nurul Rofiqo Irwan; Kaharuddin Kaharuddin
Jurnal Ilmu Kehutanan Vol 4, No 2 (2010)
Publisher : Fakultas Kehutanan Universitas Gadjah Mada

A Study of Comfort for Activities in Urban Forest Landscape of UGM; Study Case: Agro Cluster UGMThe phenomenon of global warming has caused discomfort activity in urban area. Greening in open space of Gadjah Mada University campus has been developed as urban forest landscape that supporting good environment produced high comfort for activity and enhancing urban conservation. The research objectives were to observe the comfort for activity in urban forest landscape, to observe the canopy coverage of urban forest and to reveal the effect of tree canopy coverage to the comfort for activity. Data collection was carried out by visual observation, questioner, micro climate measurement, and hemispherical images of the tree canopy coverage. Data were analyzed by descriptive statistics. The tree canopy coverage was calculated by the Sky View Factor (SVF) of hemispherical images. Research results showed that activity types in the urban forest landscape were study (10%), sitting (37%), meeting (39%), others (14%) at spread of sitting areas. Some factors that affect the comfort for activity in urban forest landscape were aesthetic, lower temperature, fresh air, inspirited area, and listened bird voice. The respondents (82%) said that the urban forest landscape was comfort for activity at whole time of 07.00 - 17.00 by the condition of local climate presented by air temperature at 29.7 - 32.6°C, normal humidity at 61.5 -74.1% and breeze wind velocity at 0.6 - 2.8 m/s. Tree canopy of urban forest landscape had covered more than 50% identified by Sky View Factor (SVF 0.026-0.446). The tree canopy coverage of urban forest created tree shaded areas for the activities which showed thermally comfort because of microclimate controlled by urban forest.

Fungsi Ekologis Tanaman di Taman Kearifan (Wisdom Park) UGM Julia Wahyu Anida; Siti Nurul Rofiqo Irwan; Taufan Alam
Vegetalika Vol 12, No 2 (2023): In Publish
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/veg.78487

Taman Kearifan lokal UGM memiliki fungsi ekologis sebagai pengendali iklim mikro. Penelitian ini bertujuan untuk menganalisis fungsi ekologis tanaman yaitu penurun suhu, kontrol kelembaban, kontrol kecepatan angin, dan peredam kebisingan di Taman Kearifan UGM. Penelitian dilaksanakan pada bulan Januari-Maret 2022. Metode penelitian yang digunakan adalah metode survei dengan sampel kuadran. Data dianalisis menggunakan Key Performance Index (KPI) dan Uji T-Test. Tanaman di dalam taman menurunkan suhu udara dan meningkatkan kelembaban sebesar 2-3oC dan 6-10% dibandingkan di luar taman. Kecepatan angin, dan tingkat kebisingan di dalam taman lebih rendah dibandingkan di luar, sebesar 0,84-1,21 m/s, dan 14,5-16 dB. Terdapat empat kategori tanaman yang dinilai, yaitu sangat sesuai, sesuai, kurang sesuai, dan tidak sesuai. Kategori dinilai berdasarkan tanaman yang diamati dibandingkan dengan parameter.Tanaman yang tergolong sangat sesuai dalam menurunkan suhu, kontrol kelembaban, dan mengurangi kebisingan adalah loa (Ficus racemosa) dan trembesi (Samanea saman); buah nona (Annona squamosa) dan trembesi (Samanea saman); serta beringin (Ficus benjamina) dan kapuk randu (Ceiba pentandra). Tanaman kategori sangat sesuai dan sesuai pada fungsi ekologis kontrol kelembaban, peredam kebisingan, kontrol kecepatan angin, dan penurun suhu sejumlah 2 dan 20 tanaman, 2 dan 19 tanaman, 0 dan 16 tanaman, serta 2 dan 11 tanaman. Walaupun tanaman kategori sangat sesuai dan sesuai dalam fungsi ekologis penurun suhu dan kontrol kecepatan angin jumlahnya sedikit, tanaman tersebut tetap berpengaruh pada iklim mikro di dalam Taman Kearifan UGM, karena satu tanaman dengan kategori sangat sesuai dan sesuai lebih dapat menaungi lingkungan sekitarnya dibanding beberapa tanaman dengan kategori kurang sesuai.

Peningkatan Kapasitas Masyarakat melalui Pengolahan Limbah Organik untuk Pupuk Tanaman di Pekarangan Perkotaan Siti Nurul Rofiqo Irwan; Nasih Widya Yuwono; Retno Nur Utami; Haviah Hafidhotul Ilmiah
Agrokreatif: Jurnal Ilmiah Pengabdian kepada Masyarakat Vol. 9 No. 2 (2023): Agrokreatif Jurnal Ilmiah Pengabdian Kepada Masyarakat
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/agrokreatif.9.2.164-172

The most sources of waste have been from households in urban area. The urban high population and daily food consumption effect the waste is potential to pollute the environment. Innovation of waste treatment should be applied by local community in urban area to reduce the household waste. This activity was a community service program UGM 2022 and supporting the Bantul Government program "Bantul free of waste 2025". The aims of this program were to improve community capacity and practice through household organic waste treatment. The activity was carried out at the Singosaren Padukuhan, Wukirsari Village, Imogiri, Bantul Regency, Special Region of Yogyakarta (DIY), in April‒October 2022. The method of program in community were included of field learning by teaching and practicing, community assistance, and evaluation of implementation. The 35 participants of PKK group from Singosaren hamlet joined this program that divided into 6 groups from 5 neighbourhood organisation (Rukun Tentangga). Organic waste process can be processed through fermentation of fresh organic waste (FLOS) or ecoenzyme and into liquid organic fertilizer using the stacked bucket (POCET) for 2–3 months. The FLOS and POCET products of waste fermentation are used as liquid fertilizers for cultivating plants in their yard Pekarangan. FLOS can also be used as multi-purpose liquid cleaner for home appliances. The raw materials included of fruit rind and vegetable waste. The results have showed the community enthusiasm, community capacity on organic waste processing and its utilization independently in the community. The application of FLOS and POCET as plant fertilizer showed better growing of plants in urban home gaden Pekarangan.

Local Community Participation Beraban Village in The Management of Tanah Lot Tourism Object Kediri District Tabanan Regency, Bali Dewi, Roels Ni Made Sri Puspa; Priyambodo, Tri Kuntoro; Irwan, Siti Nurul Rofiqo
Stupa Vol 1 No 1 (2019): Global Research on Tourism Development and Advancement (GARUDA)
Publisher : Prasetiya Mulya Publishing

The community as the main actor in the management of tourist attractions is very important in tourism development. The role of community can be as a medium to preserve the social cultural values in these attractions. Tanah Lot tourism attraction is one of the biggest tourist attractions in Bali which has a high number of tourist visits. Tanah Lot is managed by two parties, namely the Government of Tabanan Regency and the local community of Beraban Village. The purpose of this study was to measure the stage of community participation in the management of Tanah Lot. Community participation in the management of Tanah Lot attractions in the planning stage, the score is 2.25, the implementation stage is 4.35, the benefit-taking stage is 4.72 and the supervision stage is 4.14. The high level of community participation at the implementation, benefit-taking, supervision and evaluation stages is due to the management of Tanah Lot handed over to the Customary Village (Desa Adat). The lowest stage of community participation in management of Tanah Lot is the planning stage. The low level of community participation at this stage is due to three factors: cooperation agreement, internal factor and external factor of the community.

Anatomical responses of roots and yield of cocoa (Theobroma cacao L.) to K fertilization doses Shodiq, Muhammad Syaiful; Susila Putra, Eka Tarwaca; Rofiqo Irwan, Siti Nurul
Jurnal Ilmu Pertanian Vol 9, No 2 (2024): August
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.76188

Cocoa is one of important commodities for the economy of Indonesia. However, national exports of the commodity has declined due to decreasing of domestic cocoa production. For enhancing cocoa production, potassium fertilization is required. Potassium (K) is an essential macronutrient in the physiology, anatomy, and yields processes. Anatomically, K is needed in the elongation of meristem tissue as well as for increasing the yields of fruit and seed. The objectives of this research included the study of the effect of K fertilizer dose and determination of optimum K doses on root anatomy development as well as the yield of cocoa pods. This research was conducted on the cocoa plantation of PT. Pagilaran. Applied doses of K fertilization consisted of 0, 150, 300, 450, and 600 g KCl/plant in Randomized Complete Block Design (RCBD) with 5 replications. Observed variables consisted of root anatomy and yield of cocoa pods. The results indicated that the dose of K fertilization significantly influenced both stele and xylem diameters of cocoa roots but insignificantly effected the thickness of cork tissue, phloem diameter, and the thickness of cambium tissue. Moreover, the dose also showed significant effect on the number of beans per pod, the weight of 100 beans, as well as the fresh and dry weight of beans per plant. It was also revealed that the dose showed no significant effect on length, diameter, and weight of the cocoa pods. It implied that K fertilization dose had effect on root anatomical properties and yield of cacao.

Strategi Mencapai Penghidupan Berkelanjutan Pada Sektor Pariwisata Suku Tengger di Taman Nasional Bromo Tengger Semeru Irsyad, Muhammad; Irwan, Siti Nurul Rofiqo; Budiani, Sri Rahayu
Jurnal Kepariwisataan: Destinasi, Hospitalitas dan Perjalanan Vol. 4 No. 1 (2020)
Publisher : Politeknik Pariwisata NHI Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34013/jk.v4i1.38

Sustainable livelihood is a concept achieved through strategies for utilizing livelihood assets natural, human, social, physical, and financial (DFID, 2001; Scoones, 2009; and Ellis, 2000). The Tengger tribe of Ngadas Village in Bromo Tengger Semeru National Park area (TNBTS) earns income from the agriculture and tourism sectors. Vulnerability due to natural disasters, trend changes in tourist arrivals, and climate change affect the five livelihood assets and livelihood strategies. The objective of this study is to analyze the five livelihood assets owned and to identify livelihood strategies. The descriptive qualitative method is used to assess five livelihoods by weighting and scaling. Livelihood strategies are analyzed by using interactive analysis method with primary and secondary data obtained. The results reveal that natural asset provides the highest value of financial asset, supported by social asset and physical asset. Human asset has the lowest value compared to other assets. The consolidation strategy is the dominant strategy done by dividing works between family members, hiring laborers, and using financial reserves. Other strategies are also carried out through opening a tourism business, planting new agricultural crops, maintaining the environment and culture from damaging external influences.

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